Am 18.07.2013 um 16:35 schrieb Paolo Bonzini <pbonz...@redhat.com>: > Il 18/07/2013 16:32, Peter Lieven ha scritto: >>>> >>> (Mis)alignment and granularity can be handled later. We can ignore them >>> for now. Later, if we decide the best way to support them is a flag, >>> we'll add it. Let's not put the cart before the horse. >>> >>> BTW, I expect alignment!=0 to be really, really rare. >> To explain my concerns: >> >> I know that my target has internal page size of 15MB. I will check what >> happens >> if I deallocate this 15MB in chunks of lets say 1MB. If the page gets >> unprovisioned >> after the last chunk is unmapped it would be fine :-) > > You're talking of granularity here, not (mis)alignment.
you are right. for the target i am talking about this is 30720 512-byte blocks for the granularity (pagesize) and 0 for the alignment. i will see what happens if I write same w/unmap the whole 30720 blocks in smaller blocks ;-) otherwise i will have to add support for honoring this values in qemu-img convert as a follow up. Peter
